Remote control of radio or wired radio receiver



Sept. 4,1934. c. E. BOHNER 1,972,471

REMOTE CONTROL OF RADIQ OR WIRED RADIO RECEIVER Filed Sept. 5, 1929.

' AMPL/r/ER DETECTOR INVENTOR CHANCE E. BOHNER.

ATTORNEY Patented Sept. 4, 1934 UNITED STATES PATENT OFFICE REMOTE CONTROL OF RADIO OR WIRED RADIO RECEIVER Chance E. Bohner, East Orange, N. J., assignor, by mesne assignments, to Federal Wired Radio, Inc., New York, N. Y., a corporation of Delaware Application September 5, 1929, Serial No. 390,617

8 Claims. (o1. 250-20) This invention relates to space and wired radio receivers and particularly to means for controlling such receivers from remote points.

An object of this invention is to locate certain portions of broadcast receiver equipment according to its function. I

Another object of the invention is to position a radio receiver at a distance from the point of reception and to control the receiver from that point.

A further object of the invention is to tune a radio receiver to one or more broadcast wave lengths and to make it operative and inoperative from the loud speaker location by the insertion of the speaker plug in predetermined tuned circuits. 1 i

A feature of the invention is that the detecting and amplifyingportion of the receiver may be located in an inconspicuous or concealed position and the loud speaker located in another and appropriate position wherever the audition of the program is desired, the receiver being controlled from the latter point.

In the receptionof broadcast programs the essentials are quality of reproduction, proper audible volume and the facility with which a particular program may be selected by the listener. This invention is adapted to produce these desirable results by permitting the loud speaker or speakers to be located in their optimum position with respect to acoustic considerations and the location of the receiving apparatus in a position to permit the construction ofthe best electrical circuits unlimited by cabinet design and appearance requirements.

The invention contemplates the provision of terminal outlets or jacks in the wallsor baseof this plug in any particular jack energizes.

the system and tunes in the station according to the jack selected. The jacks require small space,

and may be placed in inconspicuous locations) Each room in which the'listener desires to receive the stations maybe provided with these jacks, the jacks being connected in multiple so the same station may be receivedin more than one room at a time." Indicators may be provided to show what station is being received at some other location, the indicators being lights in the- The loudrelaycircuits and located near the respective jacks.

The invention will be more fully understood by reference to the accompanying schematic circuit drawing.

In the drawing, the detector and amplifier of the system are shown diagrammatically, and may consist'oi any well known type of radio receiving circuit or a circuit designed with particular emphasis on the quality and. volume of the electrical transmission therethrough. The loud speaker 5 is shown connected to a two-circuit plug by conductors 7. The loud speaker may be specially constructed from the standpoint of quality transformation of the electrical impulses into acoustic vibrations based on the particular acoustic properties of the room. For instance, the loud speaker may be built into the wall or ceiling of the room.

The system shown in the drawing is adapted to receive three broadcast wave lengths. Jacks 10, 1-1 and 12 are shown, into which plug 6 may be inserted to select the wave length desired according to the construction of the apparatus to be described hereinafter. The jack 10 has contacts 13 and 14; the jack 11 has contacts 15 and 16,and the jack 12 contacts 1'7 and 18. The jack 10 also has contact springs 20 and 21, the jack 11, contact springs 22 and 23 and the jack 12 contact'springs 24 and 25. The selecting or tuning portion of the circuit comprises tuned circuits 27, 28, 29 and 30, which comprise coupling transformers 31, 32, 33 and 34, together with fixed condensers 36 to 47,'inclusive. These tuned filter circuits may be any well known type but, preferably, of the type shown in U. S. patent applications to Louis Cohen, Serial Numbers 53,367 and 53,714, filed August 29, 1925 and August 31, 1925, respectively. These circuits are tuned by their associated elements in accordance with the energization of relays 50, 51 and 52. The condenser elements 36 to 47 are of various fixed values depending upon the wave length to be received and the constants of the transformers 31," 32, 33 and 34. T

Relay 50 controls contacts 53 to 57, inclusive, relay 51 controls contacts 58 to 62, inclusive, and relay 52 controls contacts 63 to 67, inclusive. Theserelays are energized over circuits comprising individual conductors '70, 71 and 72, and a common conductor 73. The detector and amplifier are energized over conductors '74 and 75, while the output therefrom is supplied to the jacks in multiple over conductors '76 and '17.

This receiving system may receive its signaling 1 in the cellar, attic or a closet.

energy from an aerial 80 or over the house wiring system from a wired radio broadcast station. In the wired radio reception the signals will be supplied directly over conductors '73 and '78 from which the receiver is energized. The aerial may be connected by a simple throwover switch 81. All the apparatus shown in the drawing, with exception of the loud speaker 5, plug 6 and their connecting wires, may be located in any part of a dwelling house or other building as for instance Wires leading therefrom will terminate atv the jacks 10,- 11 and 12 in the locality of the speaker.

The tuning in of a station by the insertion of plug 6 in a particular jack will now be described. Assuming that plug 6 has been inserted in the jack 12, the following circuits are made with the subsequent operation of the various associated apparatus. A circuit is made from the house supply leads over conductor '79, contact 18, conductor 75 through the amplifier and detector in parallel, conductor '74 and back to the supply source over conductor '78. This circuit energizes the radio, receiver. Another circuit is made through the closure of contact 17 over conductor '78, contact 1'7, conductor '70, winding of relay and conductor '73. This circuit energizes the relay 50 and closes contacts 53 to 57, inclusive. Upon the closing of these contacts, the proper tuning elements are connected into the circuits 2'7, 28, 29'

and 30 to tune them to the broadcast frequency previously determined. In the present system, contact 53 connects condenser 45 in circuit 30 with the secondary of transformer 34; the contact 54 tunes the circuit 29 by connecting the condenser 42 in circuit-with the secondary of transformer 33 and primary of transformer 34; the contact connects condenser 39 into circuit 28 tuning that circuit to the frequency which is desired received; the contact 56connects the condenser 36 in circuit 2'7 and contact 5'7 tunes the input-circuit of the system to the desired wave length. 7

When thereceiver is thus tuned by the making of the contacts just described, a particular carrier wave received froin'either the .antennaor house lightingwires will be detected and the audio frequency amplified and sent out over conductors '76 and '77, spring contacts 24 and 25, conductors '7' to the loud speaker 5, in which it will be repro- V duced into sound waves.

If the plug 6 is insertedin the jack 1 1, relay 51 and the receiver are energized through the closing of contacts 15 and l6,-respectively. Relay 51 then closes its contacts 58 to 61, inclusive, which connect in condensers 46, 43, 40 and 37, respectively, while contact 62 tunes the input circuit to the desired frequency. The detected and ampli-- fied signals received on this wave length are then transmitted over spring contacts' 22 and '23 in the The relay 52 in closing its contacts63 to 6'7, in-

elusive connects condensers 4'7, 44, 41 and 38 in the circuits 30, 29, 28, and 2'7, respectively,.whi le contact 5'7 tunesthe input circuit of the system.

Theprogram on this wave length is then-sent over the contacts v20 and 21 fromthe audio 'frequency amplifier to the speaker 5.

a It is obvious in theabove case that the removal of the plug 6 from any one of the jacks de-energizes, and 'detunes the, system by breaking the energizing contacts of the :jack. To transfer the reception from one station to another to which the system has been previously adjusted, the plug is removed from one jack and inserted in another jack. The system is thereby de-energized and detuned and energized and tuned to the new wave length. 7

While the system disclosed is adapted to receive only three wave lengths, it is obvious that more broadcasting frequencies may be received by adding additional jacks, relays and tuning elements in the same manner as those shown in the drawing. Furthermore by the multiple connection of the jacks, the same station may be received at several locations simultaneously.

The jacks may also, if desired, be located in portable jack boxes which may be placed on the desk, chair arm or any convenient point with a cable leading therefrom to the tuning and amplifying system. In this manner it is exceptionally convenient to tune the receiver when located at a remote point. y

Although the invention has been described and embodied in a particular circuit, it is to be understood that it iscapable of adaptation to equivalent systems and is notsto be limited other than by the scope of the appended claims.

I claim: 1 I I l. A carrier wave receiving system adapted to receive broadcast programs comprising apparatus receptive to wired radio or space radio frequencies, means including a plurality of selectively actuated relays for effecting the tuning of said apparatus to a particular frequency, a loud speaker for changing the output of saidapparatus into sound vibrations and a plurality of jacks. with associated contact springs, each jack havingan individual connection with one of said relays, a connection with a source of energy and contact springs adapted by plugging in to connect said loud speaker with said apparatus, whereby any 5 one of said relays may be actuated in accordance with a desired frequency selection, said apparatus energized and said loudspeaker connected and whereby said apparatus may be de-energized by the mere manual operation of disconnecting said loud speaker from said jack.

2. A carrier wave receiving system adapted to receive wired and space'radio broadcasts comprising a detector and amplifying system for said carrier waves, means for receiving either said 5 wired or space broadcasts, a plurality-of sets of tuned circuits associated with said receiving system, a corresponding plurality of relays for con,- necting in a particular set of said .tunedcircuits,

a corresponding plurality of jacks with associated 3 contact springs remotelylocated with respect-to said receiving system for operating saidrelays, an acoustic device having conductors terminating in a plug, saidplug being adapted to be inserted in any one of saidv jacks for operating a respective 35 relay and connecting in the respective set of tuned circuits into said receiving system. i I j 3. The system in accordance with claim 2 in which anyone of said sets of tuned circuits ,comprises an inductively coupled filter system.

4. The system in; accordance with claimf2 in-- cluding common conductors; for supplying enep. gizing current to said relays and: said receiving system, and forsupplying wired radio. carrier waves to said tuned circuits. a

5. The system accordance with claim 2 including common conductors for supplying energizing currentto'said receiving system and to said relays and for supplying ,wired radio-signalling energy, and'in which any one set of said tunedlw ling energy for reception of said wired radio ire quencies.

8. The system in accordance with claim 1 including common conductors for supplying energizing current to said receiving apparatus and to said relays and for supplying wired radio signalling energy, and including an inductively coupled filter system responsive to said wired radio signalling energy transmitted over said common conductors.

CHANCE E. BOHNER.

CERTIFICATE OF CORRECTION.

Patent No. 1,972,471. September 4, 9.34.

CHANGE E. BOHNER.

It is hereby certified that the name of the assignee in the above numbered patent Was erroneously described and specified as "Federal Wired Radio, inc. whereas said name should have been described and specified as Wired Eadie, Inc., as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of October, A. D. 1934.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

